Finding the Fourth Proportional to 100,622.69, 138,861.73 and 55,304.99
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Solution
The fourth proportional to 100,622.69, 138,861.73 and 55,304.99 is: 76,322.22
Step by Step Solution
- Step 1: Write the proportion equation
100,622.69 : 138,861.73 = 55,304.99 : x - Step 2: Convert to fraction form
100,622.69/138,861.73 = 55,304.99/x - Step 3: Cross multiply
100,622.69x = 138,861.73 × 55,304.99 - Step 4: Simplify right side
100,622.69x = 7,679,746,589.03 - Step 5: Solve for x
x = 7,679,746,589.03/100,622.69 - Step 6: Final answer
x = 76,322.22
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.